Monkey/ human CD4/CD8 in FFPE tissues

HI all,
I am using human CD4 and CD8 from Orthommune and DAKO clones OKT4 and DKT25 (I think) respectively on monkey frozen skin and it works well but I was wondering if anyone had suggestions and Info for antibodies that work in (FFPE) for monkeys. These antibodies work in Formalin fixed HUMAN samples but I can't seem to get them to work in monkey anyone doing this?????
thanks
Jamie Erickson
Associate Scientist
Genetics Institute
1 Burtt Rd.
Andover, MA 01810
work : (978) 247-1348
FAX : (978) 247-1333